30 results about "Rate independent" patented technology

A method and apparatus for controlling a brushless DC (BLDC) motor over a wide range of angular speeds is presented. Analog magnetic sensors provide continuous signal measurements related to the rotor angular position at a sample rate independent of rotor angular speed. In one embodiment, analog signal measurements are subsequently processed using an arctangent function to obtain the rotor angular position. The arctangent may be computed using arithmetic computation, a small angle approximation, a polynomial evaluation approach, a table lookup approach, or a combination of various methods. In one embodiment, the BLDC rotor is used to drive a Roots blower used as a compressor in a portable mechanical ventilator system.

A method and apparatus for controlling a brushless DC (BLDC) motor over a wide range of angular speeds is presented. Analog magnetic sensors provide continuous signal measurements related to the rotor angular position at a sample rate independent of rotor angular speed. In one embodiment, analog signal measurements are subsequently processed using an arctangent function to obtain the rotor angular position. The arctangent may be computed using arithmetic computation, a small angle approximation, a polynomial evaluation approach, a table lookup approach, or a combination of various methods. In one embodiment, the BLDC rotor is used to drive a Roots blower used as a compressor in a portable mechanical ventilator system.

An impact attenuator system includes a hyperelastic member that comprises an energy absorbing material which behaves in a rate-independent hyperelastic manner so that its permanent set is minimized and the material can absorb tremendous amounts of impact energy while remaining fully recoverable.

An agricultural harvesting machine includes a first gathering element adapted to be driven by a first drive mechanism so as to gather crop and feed the crop in a direction substantially opposite to a direction of motion of the harvesting machine. A second gathering element is adapted to receive the crop from the first gathering element and is further adapted to be driven so as to transfer the crop in a direction substantially transverse to the direction of motion. Intake elements are adapted to receive the crop from the second gathering element. The second gathering element and intake elements are adapted to be driven at related rates. The first gathering element is driveable at a rate independent from a driven rate of the second gathering element and the intake elements.

Methods and apparatus are provided for block and rate independent decoding of LDPC codes. The disclosed LDPC decoders support multiple code block lengths and code rates, as well as a variable parity check matrix. The disclosed LDPC decoders decode LDPC codes that are based on a parity check matrix having a plurality of sub-matrices, wherein each row and column of the plurality of sub-matrices has a single entry. Each of the sub-matrices has at least one associated Phi-node, wherein each Phi-node comprises a memory device having a plurality of memory elements, wherein one or more of the memory elements may be selectively disabled. The Phi-nodes may be selectively disabled, for example, at run-time. The Phi-node optionally further comprises a multiplexer in order to provide a variable parity check matrix.

A sampling-rate-independent method of automated speech recognition (ASR). Speech energies of a plurality of codebooks generated from training data created at an ASR sampling rate are compared to speech energies in a current frame of acoustic data generated from received audio created at an audio sampling rate below the ASR sampling rate. A codebook is selected from the plurality of codebooks, and has speech energies that correspond to speech energies in the current frame over a spectral range corresponding to the audio sampling rate. Speech energies above the spectral range are copied from the selected codebook and appended to the current frame.

An agricultural harvesting machine includes a first gathering element adapted to be driven by a first drive mechanism so as to gather crop and feed the crop in a direction substantially opposite to a direction of motion of the harvesting machine. A second gathering element is adapted to receive the crop from the first gathering element and is further adapted to be driven so as to transfer the crop in a direction substantially transverse to the direction of motion. Intake elements are adapted to receive the crop from the second gathering element. The second gathering element and intake elements are adapted to be driven at related rates. The first gathering element is driveable at a rate independent from a driven rate of the second gathering element and the intake elements.

An improved thermal lance is made of a low carbon steel sheath having an internal bore and a thin cylindrical rod that is roll-formed from low carbon steel sheet. The rod being sized for conforming fit in the bore of the sheath and has a length dimension that is longer than the length of the sheath. The rod is inserted into the bore of the sheath and allowed to move axially within the sheath under propulsion of the pressurized oxygen to allow the rod to be burned at a rate independent of the burn rate of the sheath. A thermal lance assembly using the improved lance also includes a magnet located near the bottom of the lance housing to keep the lance from moving during routine handling and storage.

In a cell management method and apparatus which can prevent a call loss generated in association with an increase of cell usage rate independent of a protection frequency bandwidth, cell usage rates of operating cells (at frequency Fo) are acquired. Narrower nonoperating cells (at frequency Fo) of the operating cell in which the cell usage rate indicates a high-load state are rendered an addition candidate and the operating cell is rendered a deletion candidate. A broader nonoperating cell (at frequency Fo) of the operating cell in which the cell usage rate indicates a low-load state is rendered an addition candidate, and the operating cell and other narrower operating cells belonging to the nonoperating cell are rendered deletion candidate. From among the nonoperating cells that are the addition candidate and the operating cells that are the deletion cell(s) and an operating cell(s) to be switched over to a nonoperating cell(s) is determined.

The invention discloses a large-flow independent IP analysis system based on deduplication of multi-node flow data. The system includes: a flow collection module for collecting flow data; a filtering module for filtering flow data; a flow aggregation module for Aggregate the filtered traffic data; the traffic sorting module is used to sort the traffic aggregation results; the traffic drill-down module is used to drill down and analyze multiple IP addresses with large traffic to find the cause of the large traffic. The invention also discloses a large flow independent IP analysis method based on deduplication of multi-node flow data. The present invention makes the knowing of the specific traffic more targeted, purposeful, and non-blindly queried from a large amount of data, and can provide more convenient and effective information compared with the high controllability requirements of the administrator for the traditional traffic collection data. Highly customized data, more intuitive and practical.

A method for mitigating the impact of a power imbalance on a remote data rate in a wireless local area network (WLAN) includes transmitting a wireless local area network (WLAN) acknowledgement (ACK) packet at a first transmit power level to a remote device. The method further includes transmitting, to the remote device, a WLAN data packet at a second transmit power level that is lower than the first transmit power level of the WLAN ACK packet. Another method for mitigating the impact of a power imbalance on a remote data rate in a wireless local area network (WLAN) may include selecting a wireless local area network (WLAN) acknowledgement (ACK) packet transmit rate independent from a rate at which a WLAN data packet is received. This method further includes transmitting, to a remote device, a WLAN ACK packet at the selected WLAN ACK packet transmit rate.